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File:Grand piano action - Piano Knuckles, at piano shop Steinway Pianos of Calgary.jpg - Wikimedia Commons
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Sheet Music Boss "Knuckles Theme Song" Sheet Music (Piano Solo) in B Minor - Download & Print - SKU: MN0181067
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The Knuckle Song - For Piano Duet By Traditional - Digital Sheet Music For Score And Parts - Download & Print A0.561027 | Sheet Music Plus
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